Image to Base64
Encode an image as a Base64 data URL and copy it for HTML or CSS.
Drag & drop or click to upload
Upload Image to Convert
Drag & drop or click to upload
Files stay on your device
Output
Base64No image loaded
About Image to Base64
Create a data URL containing the image MIME type and Base64 content. This is useful for small embedded assets, prototypes, and testing CSS backgrounds.
How to use Image to Base64
- Choose an image from your device.
- Review the generated data URL in the output panel.
- Copy the result and use it as an image source or CSS background URL.
Your files stay on your device
Your images are processed in your browser and downloaded to your device. Learn more in our privacy policy.
Powered by your browser
Processing time and image limits depend on your device. Cached tools may work offline; AI features need their model assets downloaded first.
Frequently asked questions
Does Base64 make an image smaller?
No. Base64 encoding typically adds about one third to the binary size before text compression. For large images, a separate optimized image file is usually more suitable.
Is the output just the Base64 string?
The output is a complete data URL, including its data:image/...;base64, prefix. Keep the prefix when using it as an HTML image source.
Are my image files uploaded?
No. Image processing happens locally in your browser. The website downloads its code and, for AI tools, model assets. Anonymous site usage analytics are separate from your image files.
Is this tool free to use?
Yes. No account or payment is required. Processing capacity depends on your browser, image dimensions, and available device memory.